Sigh...
Can't we do a LITTLE better in looking for information than going somewhere where any idiot can write anything and the "best" answer is the one the most other idiots vote for? In this case, by getting a grand total of two votes instead of one?
Texas revenue sources, including an explanation of the Federal funds.
Current numbers here.
The real answer is that Texas, unlike California and a number of other states, is not run by leftist lunatics whose first response to seeing someone in their state actually make some money is to try to destroy them.